Home / 3,021.72-4,540.68-2,640.74

Finding the Fourth Proportional to 3,021.72, 4,540.68 and 2,640.74

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Solution

The fourth proportional to 3,021.72, 4,540.68 and 2,640.74 is: 3,968.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.72 : 4,540.68 = 2,640.74 : x
  2. Step 2: Convert to fraction form
    3,021.72/4,540.68 = 2,640.74/x
  3. Step 3: Cross multiply
    3,021.72x = 4,540.68 × 2,640.74
  4. Step 4: Simplify right side
    3,021.72x = 11,990,755.30
  5. Step 5: Solve for x
    x = 11,990,755.30/3,021.72
  6. Step 6: Final answer
    x = 3,968.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.